diff options
Diffstat (limited to 'drivers/net/ethernet/microchip/sparx5/sparx5_main.c')
| -rw-r--r-- | drivers/net/ethernet/microchip/sparx5/sparx5_main.c | 744 |
1 files changed, 744 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c new file mode 100644 index 000000000000..0ba255d547b0 --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c @@ -0,0 +1,744 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip Sparx5 Switch driver + * + * Copyright (c) 2021 Microchip Technology Inc. and its subsidiaries. + * + * The Sparx5 Chip Register Model can be browsed at this location: + * https://github.com/microchip-ung/sparx-5_reginfo + */ +#include <linux/module.h> +#include <linux/device.h> +#include <linux/netdevice.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/of.h> +#include <linux/of_net.h> +#include <linux/of_mdio.h> +#include <net/switchdev.h> +#include <linux/etherdevice.h> +#include <linux/io.h> +#include <linux/printk.h> +#include <linux/iopoll.h> +#include <linux/mfd/syscon.h> +#include <linux/regmap.h> +#include <linux/types.h> +#include <linux/reset.h> + +#include "sparx5_main_regs.h" +#include "sparx5_main.h" + +#define QLIM_WM(fraction) \ + ((SPX5_BUFFER_MEMORY / SPX5_BUFFER_CELL_SZ - 100) * (fraction) / 100) +#define IO_RANGES 3 + +struct initial_port_config { + u32 portno; + struct device_node *node; + struct sparx5_port_config conf; + struct phy *serdes; +}; + +struct sparx5_ram_config { + void __iomem *init_reg; + u32 init_val; +}; + +struct sparx5_main_io_resource { + enum sparx5_target id; + phys_addr_t offset; + int range; +}; + +static const struct sparx5_main_io_resource sparx5_main_iomap[] = { + { TARGET_CPU, 0, 0 }, /* 0x600000000 */ + { TARGET_FDMA, 0x80000, 0 }, /* 0x600080000 */ + { TARGET_PCEP, 0x400000, 0 }, /* 0x600400000 */ + { TARGET_DEV2G5, 0x10004000, 1 }, /* 0x610004000 */ + { TARGET_DEV5G, 0x10008000, 1 }, /* 0x610008000 */ + { TARGET_PCS5G_BR, 0x1000c000, 1 }, /* 0x61000c000 */ + { TARGET_DEV2G5 + 1, 0x10010000, 1 }, /* 0x610010000 */ + { TARGET_DEV5G + 1, 0x10014000, 1 }, /* 0x610014000 */ + { TARGET_PCS5G_BR + 1, 0x10018000, 1 }, /* 0x610018000 */ + { TARGET_DEV2G5 + 2, 0x1001c000, 1 }, /* 0x61001c000 */ + { TARGET_DEV5G + 2, 0x10020000, 1 }, /* 0x610020000 */ + { TARGET_PCS5G_BR + 2, 0x10024000, 1 }, /* 0x610024000 */ + { TARGET_DEV2G5 + 6, 0x10028000, 1 }, /* 0x610028000 */ + { TARGET_DEV5G + 6, 0x1002c000, 1 }, /* 0x61002c000 */ + { TARGET_PCS5G_BR + 6, 0x10030000, 1 }, /* 0x610030000 */ + { TARGET_DEV2G5 + 7, 0x10034000, 1 }, /* 0x610034000 */ + { TARGET_DEV5G + 7, 0x10038000, 1 }, /* 0x610038000 */ + { TARGET_PCS5G_BR + 7, 0x1003c000, 1 }, /* 0x61003c000 */ + { TARGET_DEV2G5 + 8, 0x10040000, 1 }, /* 0x610040000 */ + { TARGET_DEV5G + 8, 0x10044000, 1 }, /* 0x610044000 */ + { TARGET_PCS5G_BR + 8, 0x10048000, 1 }, /* 0x610048000 */ + { TARGET_DEV2G5 + 9, 0x1004c000, 1 }, /* 0x61004c000 */ + { TARGET_DEV5G + 9, 0x10050000, 1 }, /* 0x610050000 */ + { TARGET_PCS5G_BR + 9, 0x10054000, 1 }, /* 0x610054000 */ + { TARGET_DEV2G5 + 10, 0x10058000, 1 }, /* 0x610058000 */ + { TARGET_DEV5G + 10, 0x1005c000, 1 }, /* 0x61005c000 */ + { TARGET_PCS5G_BR + 10, 0x10060000, 1 }, /* 0x610060000 */ + { TARGET_DEV2G5 + 11, 0x10064000, 1 }, /* 0x610064000 */ + { TARGET_DEV5G + 11, 0x10068000, 1 }, /* 0x610068000 */ + { TARGET_PCS5G_BR + 11, 0x1006c000, 1 }, /* 0x61006c000 */ + { TARGET_DEV2G5 + 12, 0x10070000, 1 }, /* 0x610070000 */ + { TARGET_DEV10G, 0x10074000, 1 }, /* 0x610074000 */ + { TARGET_PCS10G_BR, 0x10078000, 1 }, /* 0x610078000 */ + { TARGET_DEV2G5 + 14, 0x1007c000, 1 }, /* 0x61007c000 */ + { TARGET_DEV10G + 2, 0x10080000, 1 }, /* 0x610080000 */ + { TARGET_PCS10G_BR + 2, 0x10084000, 1 }, /* 0x610084000 */ + { TARGET_DEV2G5 + 15, 0x10088000, 1 }, /* 0x610088000 */ + { TARGET_DEV10G + 3, 0x1008c000, 1 }, /* 0x61008c000 */ + { TARGET_PCS10G_BR + 3, 0x10090000, 1 }, /* 0x610090000 */ + { TARGET_DEV2G5 + 16, 0x10094000, 1 }, /* 0x610094000 */ + { TARGET_DEV2G5 + 17, 0x10098000, 1 }, /* 0x610098000 */ + { TARGET_DEV2G5 + 18, 0x1009c000, 1 }, /* 0x61009c000 */ + { TARGET_DEV2G5 + 19, 0x100a0000, 1 }, /* 0x6100a0000 */ + { TARGET_DEV2G5 + 20, 0x100a4000, 1 }, /* 0x6100a4000 */ + { TARGET_DEV2G5 + 21, 0x100a8000, 1 }, /* 0x6100a8000 */ + { TARGET_DEV2G5 + 22, 0x100ac000, 1 }, /* 0x6100ac000 */ + { TARGET_DEV2G5 + 23, 0x100b0000, 1 }, /* 0x6100b0000 */ + { TARGET_DEV2G5 + 32, 0x100b4000, 1 }, /* 0x6100b4000 */ + { TARGET_DEV2G5 + 33, 0x100b8000, 1 }, /* 0x6100b8000 */ + { TARGET_DEV2G5 + 34, 0x100bc000, 1 }, /* 0x6100bc000 */ + { TARGET_DEV2G5 + 35, 0x100c0000, 1 }, /* 0x6100c0000 */ + { TARGET_DEV2G5 + 36, 0x100c4000, 1 }, /* 0x6100c4000 */ + { TARGET_DEV2G5 + 37, 0x100c8000, 1 }, /* 0x6100c8000 */ + { TARGET_DEV2G5 + 38, 0x100cc000, 1 }, /* 0x6100cc000 */ + { TARGET_DEV2G5 + 39, 0x100d0000, 1 }, /* 0x6100d0000 */ + { TARGET_DEV2G5 + 40, 0x100d4000, 1 }, /* 0x6100d4000 */ + { TARGET_DEV2G5 + 41, 0x100d8000, 1 }, /* 0x6100d8000 */ + { TARGET_DEV2G5 + 42, 0x100dc000, 1 }, /* 0x6100dc000 */ + { TARGET_DEV2G5 + 43, 0x100e0000, 1 }, /* 0x6100e0000 */ + { TARGET_DEV2G5 + 44, 0x100e4000, 1 }, /* 0x6100e4000 */ + { TARGET_DEV2G5 + 45, 0x100e8000, 1 }, /* 0x6100e8000 */ + { TARGET_DEV2G5 + 46, 0x100ec000, 1 }, /* 0x6100ec000 */ + { TARGET_DEV2G5 + 47, 0x100f0000, 1 }, /* 0x6100f0000 */ + { TARGET_DEV2G5 + 57, 0x100f4000, 1 }, /* 0x6100f4000 */ + { TARGET_DEV25G + 1, 0x100f8000, 1 }, /* 0x6100f8000 */ + { TARGET_PCS25G_BR + 1, 0x100fc000, 1 }, /* 0x6100fc000 */ + { TARGET_DEV2G5 + 59, 0x10104000, 1 }, /* 0x610104000 */ + { TARGET_DEV25G + 3, 0x10108000, 1 }, /* 0x610108000 */ + { TARGET_PCS25G_BR + 3, 0x1010c000, 1 }, /* 0x61010c000 */ + { TARGET_DEV2G5 + 60, 0x10114000, 1 }, /* 0x610114000 */ + { TARGET_DEV25G + 4, 0x10118000, 1 }, /* 0x610118000 */ + { TARGET_PCS25G_BR + 4, 0x1011c000, 1 }, /* 0x61011c000 */ + { TARGET_DEV2G5 + 64, 0x10124000, 1 }, /* 0x610124000 */ + { TARGET_DEV5G + 12, 0x10128000, 1 }, /* 0x610128000 */ + { TARGET_PCS5G_BR + 12, 0x1012c000, 1 }, /* 0x61012c000 */ + { TARGET_PORT_CONF, 0x10130000, 1 }, /* 0x610130000 */ + { TARGET_DEV2G5 + 3, 0x10404000, 1 }, /* 0x610404000 */ + { TARGET_DEV5G + 3, 0x10408000, 1 }, /* 0x610408000 */ + { TARGET_PCS5G_BR + 3, 0x1040c000, 1 }, /* 0x61040c000 */ + { TARGET_DEV2G5 + 4, 0x10410000, 1 }, /* 0x610410000 */ + { TARGET_DEV5G + 4, 0x10414000, 1 }, /* 0x610414000 */ + { TARGET_PCS5G_BR + 4, 0x10418000, 1 }, /* 0x610418000 */ + { TARGET_DEV2G5 + 5, 0x1041c000, 1 }, /* 0x61041c000 */ + { TARGET_DEV5G + 5, 0x10420000, 1 }, /* 0x610420000 */ + { TARGET_PCS5G_BR + 5, 0x10424000, 1 }, /* 0x610424000 */ + { TARGET_DEV2G5 + 13, 0x10428000, 1 }, /* 0x610428000 */ + { TARGET_DEV10G + 1, 0x1042c000, 1 }, /* 0x61042c000 */ + { TARGET_PCS10G_BR + 1, 0x10430000, 1 }, /* 0x610430000 */ + { TARGET_DEV2G5 + 24, 0x10434000, 1 }, /* 0x610434000 */ + { TARGET_DEV2G5 + 25, 0x10438000, 1 }, /* 0x610438000 */ + { TARGET_DEV2G5 + 26, 0x1043c000, 1 }, /* 0x61043c000 */ + { TARGET_DEV2G5 + 27, 0x10440000, 1 }, /* 0x610440000 */ + { TARGET_DEV2G5 + 28, 0x10444000, 1 }, /* 0x610444000 */ + { TARGET_DEV2G5 + 29, 0x10448000, 1 }, /* 0x610448000 */ + { TARGET_DEV2G5 + 30, 0x1044c000, 1 }, /* 0x61044c000 */ + { TARGET_DEV2G5 + 31, 0x10450000, 1 }, /* 0x610450000 */ + { TARGET_DEV2G5 + 48, 0x10454000, 1 }, /* 0x610454000 */ + { TARGET_DEV10G + 4, 0x10458000, 1 }, /* 0x610458000 */ + { TARGET_PCS10G_BR + 4, 0x1045c000, 1 }, /* 0x61045c000 */ + { TARGET_DEV2G5 + 49, 0x10460000, 1 }, /* 0x610460000 */ + { TARGET_DEV10G + 5, 0x10464000, 1 }, /* 0x610464000 */ + { TARGET_PCS10G_BR + 5, 0x10468000, 1 }, /* 0x610468000 */ + { TARGET_DEV2G5 + 50, 0x1046c000, 1 }, /* 0x61046c000 */ + { TARGET_DEV10G + 6, 0x10470000, 1 }, /* 0x610470000 */ + { TARGET_PCS10G_BR + 6, 0x10474000, 1 }, /* 0x610474000 */ + { TARGET_DEV2G5 + 51, 0x10478000, 1 }, /* 0x610478000 */ + { TARGET_DEV10G + 7, 0x1047c000, 1 }, /* 0x61047c000 */ + { TARGET_PCS10G_BR + 7, 0x10480000, 1 }, /* 0x610480000 */ + { TARGET_DEV2G5 + 52, 0x10484000, 1 }, /* 0x610484000 */ + { TARGET_DEV10G + 8, 0x10488000, 1 }, /* 0x610488000 */ + { TARGET_PCS10G_BR + 8, 0x1048c000, 1 }, /* 0x61048c000 */ + { TARGET_DEV2G5 + 53, 0x10490000, 1 }, /* 0x610490000 */ + { TARGET_DEV10G + 9, 0x10494000, 1 }, /* 0x610494000 */ + { TARGET_PCS10G_BR + 9, 0x10498000, 1 }, /* 0x610498000 */ + { TARGET_DEV2G5 + 54, 0x1049c000, 1 }, /* 0x61049c000 */ + { TARGET_DEV10G + 10, 0x104a0000, 1 }, /* 0x6104a0000 */ + { TARGET_PCS10G_BR + 10, 0x104a4000, 1 }, /* 0x6104a4000 */ + { TARGET_DEV2G5 + 55, 0x104a8000, 1 }, /* 0x6104a8000 */ + { TARGET_DEV10G + 11, 0x104ac000, 1 }, /* 0x6104ac000 */ + { TARGET_PCS10G_BR + 11, 0x104b0000, 1 }, /* 0x6104b0000 */ + { TARGET_DEV2G5 + 56, 0x104b4000, 1 }, /* 0x6104b4000 */ + { TARGET_DEV25G, 0x104b8000, 1 }, /* 0x6104b8000 */ + { TARGET_PCS25G_BR, 0x104bc000, 1 }, /* 0x6104bc000 */ + { TARGET_DEV2G5 + 58, 0x104c4000, 1 }, /* 0x6104c4000 */ + { TARGET_DEV25G + 2, 0x104c8000, 1 }, /* 0x6104c8000 */ + { TARGET_PCS25G_BR + 2, 0x104cc000, 1 }, /* 0x6104cc000 */ + { TARGET_DEV2G5 + 61, 0x104d4000, 1 }, /* 0x6104d4000 */ + { TARGET_DEV25G + 5, 0x104d8000, 1 }, /* 0x6104d8000 */ + { TARGET_PCS25G_BR + 5, 0x104dc000, 1 }, /* 0x6104dc000 */ + { TARGET_DEV2G5 + 62, 0x104e4000, 1 }, /* 0x6104e4000 */ + { TARGET_DEV25G + 6, 0x104e8000, 1 }, /* 0x6104e8000 */ + { TARGET_PCS25G_BR + 6, 0x104ec000, 1 }, /* 0x6104ec000 */ + { TARGET_DEV2G5 + 63, 0x104f4000, 1 }, /* 0x6104f4000 */ + { TARGET_DEV25G + 7, 0x104f8000, 1 }, /* 0x6104f8000 */ + { TARGET_PCS25G_BR + 7, 0x104fc000, 1 }, /* 0x6104fc000 */ + { TARGET_DSM, 0x10504000, 1 }, /* 0x610504000 */ + { TARGET_ASM, 0x10600000, 1 }, /* 0x610600000 */ + { TARGET_GCB, 0x11010000, 2 }, /* 0x611010000 */ + { TARGET_QS, 0x11030000, 2 }, /* 0x611030000 */ + { TARGET_ANA_ACL, 0x11050000, 2 }, /* 0x611050000 */ + { TARGET_LRN, 0x11060000, 2 }, /* 0x611060000 */ + { TARGET_VCAP_SUPER, 0x11080000, 2 }, /* 0x611080000 */ + { TARGET_QSYS, 0x110a0000, 2 }, /* 0x6110a0000 */ + { TARGET_QFWD, 0x110b0000, 2 }, /* 0x6110b0000 */ + { TARGET_XQS, 0x110c0000, 2 }, /* 0x6110c0000 */ + { TARGET_CLKGEN, 0x11100000, 2 }, /* 0x611100000 */ + { TARGET_ANA_AC_POL, 0x11200000, 2 }, /* 0x611200000 */ + { TARGET_QRES, 0x11280000, 2 }, /* 0x611280000 */ + { TARGET_EACL, 0x112c0000, 2 }, /* 0x6112c0000 */ + { TARGET_ANA_CL, 0x11400000, 2 }, /* 0x611400000 */ + { TARGET_ANA_L3, 0x11480000, 2 }, /* 0x611480000 */ + { TARGET_HSCH, 0x11580000, 2 }, /* 0x611580000 */ + { TARGET_REW, 0x11600000, 2 }, /* 0x611600000 */ + { TARGET_ANA_L2, 0x11800000, 2 }, /* 0x611800000 */ + { TARGET_ANA_AC, 0x11900000, 2 }, /* 0x611900000 */ + { TARGET_VOP, 0x11a00000, 2 }, /* 0x611a00000 */ +}; + +static int sparx5_create_targets(struct sparx5 *sparx5) +{ + struct resource *iores[IO_RANGES]; + void __iomem *iomem[IO_RANGES]; + void __iomem *begin[IO_RANGES]; + int range_id[IO_RANGES]; + int idx, jdx; + + for (idx = 0, jdx = 0; jdx < ARRAY_SIZE(sparx5_main_iomap); jdx++) { + const struct sparx5_main_io_resource *iomap = &sparx5_main_iomap[jdx]; + + if (idx == iomap->range) { + range_id[idx] = jdx; + idx++; + } + } + for (idx = 0; idx < IO_RANGES; idx++) { + iores[idx] = platform_get_resource(sparx5->pdev, IORESOURCE_MEM, + idx); + iomem[idx] = devm_ioremap(sparx5->dev, + iores[idx]->start, + iores[idx]->end - iores[idx]->start + + 1); + if (IS_ERR(iomem[idx])) { + dev_err(sparx5->dev, "Unable to get switch registers: %s\n", + iores[idx]->name); + return PTR_ERR(iomem[idx]); + } + begin[idx] = iomem[idx] - sparx5_main_iomap[range_id[idx]].offset; + } + for (jdx = 0; jdx < ARRAY_SIZE(sparx5_main_iomap); jdx++) { + const struct sparx5_main_io_resource *iomap = &sparx5_main_iomap[jdx]; + + sparx5->regs[iomap->id] = begin[iomap->range] + iomap->offset; + } + return 0; +} + +static int sparx5_create_port(struct sparx5 *sparx5, + struct initial_port_config *config) +{ + struct sparx5_port *spx5_port; + + /* netdev creation to be added in later patches */ + spx5_port = devm_kzalloc(sparx5->dev, sizeof(*spx5_port), GFP_KERNEL); + spx5_port->of_node = config->node; + spx5_port->serdes = config->serdes; + spx5_port->pvid = NULL_VID; + spx5_port->signd_internal = true; + spx5_port->signd_active_high = true; + spx5_port->signd_enable = true; + spx5_port->max_vlan_tags = SPX5_PORT_MAX_TAGS_NONE; + spx5_port->vlan_type = SPX5_VLAN_PORT_TYPE_UNAWARE; + spx5_port->custom_etype = 0x8880; /* Vitesse */ + + /* PHYLINK support to be added in later patches */ + + return 0; +} + +static int sparx5_init_ram(struct sparx5 *s5) +{ + const struct sparx5_ram_config spx5_ram_cfg[] = { + {spx5_reg_get(s5, ANA_AC_STAT_RESET), ANA_AC_STAT_RESET_RESET}, + {spx5_reg_get(s5, ASM_STAT_CFG), ASM_STAT_CFG_STAT_CNT_CLR_SHOT}, + {spx5_reg_get(s5, QSYS_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}, + {spx5_reg_get(s5, REW_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}, + {spx5_reg_get(s5, VOP_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}, + {spx5_reg_get(s5, ANA_AC_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}, + {spx5_reg_get(s5, ASM_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}, + {spx5_reg_get(s5, EACL_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}, + {spx5_reg_get(s5, VCAP_SUPER_RAM_INIT), QSYS_RAM_INIT_RAM_INIT}, + {spx5_reg_get(s5, DSM_RAM_INIT), QSYS_RAM_INIT_RAM_INIT} + }; + const struct sparx5_ram_config *cfg; + u32 value, pending, jdx, idx; + + for (jdx = 0; jdx < 10; jdx++) { + pending = ARRAY_SIZE(spx5_ram_cfg); + for (idx = 0; idx < ARRAY_SIZE(spx5_ram_cfg); idx++) { + cfg = &spx5_ram_cfg[idx]; + if (jdx == 0) { + writel(cfg->init_val, cfg->init_reg); + } else { + value = readl(cfg->init_reg); + if ((value & cfg->init_val) != cfg->init_val) + pending--; + } + } + if (!pending) + break; + usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC); + } + + if (pending > 0) { + /* Still initializing, should be complete in + * less than 1ms + */ + dev_err(s5->dev, "Memory initialization error\n"); + return -EINVAL; + } + return 0; +} + +static int sparx5_init_switchcore(struct sparx5 *sparx5) +{ + u32 value; + int err = 0; + + spx5_rmw(EACL_POL_EACL_CFG_EACL_FORCE_INIT_SET(1), + EACL_POL_EACL_CFG_EACL_FORCE_INIT, + sparx5, + EACL_POL_EACL_CFG); + + spx5_rmw(EACL_POL_EACL_CFG_EACL_FORCE_INIT_SET(0), + EACL_POL_EACL_CFG_EACL_FORCE_INIT, + sparx5, + EACL_POL_EACL_CFG); + + /* Initialize memories, if not done already */ + value = spx5_rd(sparx5, HSCH_RESET_CFG); + if (!(value & HSCH_RESET_CFG_CORE_ENA)) { + err = sparx5_init_ram(sparx5); + if (err) + return err; + } + + /* Reset counters */ + spx5_wr(ANA_AC_STAT_RESET_RESET_SET(1), sparx5, ANA_AC_STAT_RESET); + spx5_wr(ASM_STAT_CFG_STAT_CNT_CLR_SHOT_SET(1), sparx5, ASM_STAT_CFG); + + /* Enable switch-core and queue system */ + spx5_wr(HSCH_RESET_CFG_CORE_ENA_SET(1), sparx5, HSCH_RESET_CFG); + + return 0; +} + +static int sparx5_init_coreclock(struct sparx5 *sparx5) +{ + enum sparx5_core_clockfreq freq = sparx5->coreclock; + u32 clk_div, clk_period, pol_upd_int, idx; + + /* Verify if core clock frequency is supported on target. + * If 'VTSS_CORE_CLOCK_DEFAULT' then the highest supported + * freq. is used + */ + switch (sparx5->target_ct) { + case SPX5_TARGET_CT_7546: + if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT) + freq = SPX5_CORE_CLOCK_250MHZ; + else if (sparx5->coreclock != SPX5_CORE_CLOCK_250MHZ) + freq = 0; /* Not supported */ + break; + case SPX5_TARGET_CT_7549: + case SPX5_TARGET_CT_7552: + case SPX5_TARGET_CT_7556: + if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT) + freq = SPX5_CORE_CLOCK_500MHZ; + else if (sparx5->coreclock != SPX5_CORE_CLOCK_500MHZ) + freq = 0; /* Not supported */ + break; + case SPX5_TARGET_CT_7558: + case SPX5_TARGET_CT_7558TSN: + if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT) + freq = SPX5_CORE_CLOCK_625MHZ; + else if (sparx5->coreclock != SPX5_CORE_CLOCK_625MHZ) + freq = 0; /* Not supported */ + break; + case SPX5_TARGET_CT_7546TSN: + if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT) + freq = SPX5_CORE_CLOCK_625MHZ; + break; + case SPX5_TARGET_CT_7549TSN: + case SPX5_TARGET_CT_7552TSN: + case SPX5_TARGET_CT_7556TSN: + if (sparx5->coreclock == SPX5_CORE_CLOCK_DEFAULT) + freq = SPX5_CORE_CLOCK_625MHZ; + else if (sparx5->coreclock == SPX5_CORE_CLOCK_250MHZ) + freq = 0; /* Not supported */ + break; + default: + dev_err(sparx5->dev, "Target (%#04x) not supported\n", + sparx5->target_ct); + return -ENODEV; + } + + switch (freq) { + case SPX5_CORE_CLOCK_250MHZ: + clk_div = 10; + pol_upd_int = 312; + break; + case SPX5_CORE_CLOCK_500MHZ: + clk_div = 5; + pol_upd_int = 624; + break; + case SPX5_CORE_CLOCK_625MHZ: + clk_div = 4; + pol_upd_int = 780; + break; + default: + dev_err(sparx5->dev, "%d coreclock not supported on (%#04x)\n", + sparx5->coreclock, sparx5->target_ct); + return -EINVAL; + } + + /* Update state with chosen frequency */ + sparx5->coreclock = freq; + + /* Configure the LCPLL */ + spx5_rmw(CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_DIV_SET(clk_div) | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_PRE_DIV_SET(0) | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_DIR_SET(0) | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_SEL_SET(0) | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_ENA_SET(0) | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_ENA_SET(1), + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_DIV | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_PRE_DIV | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_DIR | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_SEL | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_ROT_ENA | + CLKGEN_LCPLL1_CORE_CLK_CFG_CORE_CLK_ENA, + sparx5, + CLKGEN_LCPLL1_CORE_CLK_CFG); + + clk_period = sparx5_clk_period(freq); + + spx5_rmw(HSCH_SYS_CLK_PER_SYS_CLK_PER_100PS_SET(clk_period / 100), + HSCH_SYS_CLK_PER_SYS_CLK_PER_100PS, + sparx5, + HSCH_SYS_CLK_PER); + + spx5_rmw(ANA_AC_POL_BDLB_DLB_CTRL_CLK_PERIOD_01NS_SET(clk_period / 100), + ANA_AC_POL_BDLB_DLB_CTRL_CLK_PERIOD_01NS, + sparx5, + ANA_AC_POL_BDLB_DLB_CTRL); + + spx5_rmw(ANA_AC_POL_SLB_DLB_CTRL_CLK_PERIOD_01NS_SET(clk_period / 100), + ANA_AC_POL_SLB_DLB_CTRL_CLK_PERIOD_01NS, + sparx5, + ANA_AC_POL_SLB_DLB_CTRL); + + spx5_rmw(LRN_AUTOAGE_CFG_1_CLK_PERIOD_01NS_SET(clk_period / 100), + LRN_AUTOAGE_CFG_1_CLK_PERIOD_01NS, + sparx5, + LRN_AUTOAGE_CFG_1); + + for (idx = 0; idx < 3; idx++) + spx5_rmw(GCB_SIO_CLOCK_SYS_CLK_PERIOD_SET(clk_period / 100), + GCB_SIO_CLOCK_SYS_CLK_PERIOD, + sparx5, + GCB_SIO_CLOCK(idx)); + + spx5_rmw(HSCH_TAS_STATEMACHINE_CFG_REVISIT_DLY_SET + ((256 * 1000) / clk_period), + HSCH_TAS_STATEMACHINE_CFG_REVISIT_DLY, + sparx5, + HSCH_TAS_STATEMACHINE_CFG); + + spx5_rmw(ANA_AC_POL_POL_UPD_INT_CFG_POL_UPD_INT_SET(pol_upd_int), + ANA_AC_POL_POL_UPD_INT_CFG_POL_UPD_INT, + sparx5, + ANA_AC_POL_POL_UPD_INT_CFG); + + return 0; +} + +static int sparx5_qlim_set(struct sparx5 *sparx5) +{ + u32 res, dp, prio; + + for (res = 0; res < 2; res++) { + for (prio = 0; prio < 8; prio++) + spx5_wr(0xFFF, sparx5, + QRES_RES_CFG(prio + 630 + res * 1024)); + + for (dp = 0; dp < 4; dp++) + spx5_wr(0xFFF, sparx5, + QRES_RES_CFG(dp + 638 + res * 1024)); + } + + /* Set 80,90,95,100% of memory size for top watermarks */ + spx5_wr(QLIM_WM(80), sparx5, XQS_QLIMIT_SHR_QLIM_CFG(0)); + spx5_wr(QLIM_WM(90), sparx5, XQS_QLIMIT_SHR_CTOP_CFG(0)); + spx5_wr(QLIM_WM(95), sparx5, XQS_QLIMIT_SHR_ATOP_CFG(0)); + spx5_wr(QLIM_WM(100), sparx5, XQS_QLIMIT_SHR_TOP_CFG(0)); + + return 0; +} + +/* Some boards needs to map the SGPIO for signal detect explicitly to the + * port module + */ +static void sparx5_board_init(struct sparx5 *sparx5) +{ + int idx; + + if (!sparx5->sd_sgpio_remapping) + return; + + /* Enable SGPIO Signal Detect remapping */ + spx5_rmw(GCB_HW_SGPIO_SD_CFG_SD_MAP_SEL, + GCB_HW_SGPIO_SD_CFG_SD_MAP_SEL, + sparx5, + GCB_HW_SGPIO_SD_CFG); + + /* Refer to LOS SGPIO */ + for (idx = 0; idx < SPX5_PORTS; idx++) + if (sparx5->ports[idx]) + if (sparx5->ports[idx]->conf.sd_sgpio != ~0) + spx5_wr(sparx5->ports[idx]->conf.sd_sgpio, + sparx5, + GCB_HW_SGPIO_TO_SD_MAP_CFG(idx)); +} + +static int sparx5_start(struct sparx5 *sparx5) +{ + u32 idx; + + /* Setup own UPSIDs */ + for (idx = 0; idx < 3; idx++) { + spx5_wr(idx, sparx5, ANA_AC_OWN_UPSID(idx)); + spx5_wr(idx, sparx5, ANA_CL_OWN_UPSID(idx)); + spx5_wr(idx, sparx5, ANA_L2_OWN_UPSID(idx)); + spx5_wr(idx, sparx5, REW_OWN_UPSID(idx)); + } + + /* Enable CPU ports */ + for (idx = SPX5_PORTS; idx < SPX5_PORTS_ALL; idx++) + spx5_rmw(QFWD_SWITCH_PORT_MODE_PORT_ENA_SET(1), + QFWD_SWITCH_PORT_MODE_PORT_ENA, + sparx5, + QFWD_SWITCH_PORT_MODE(idx)); + + /* Forwarding masks to be added in later patches */ + /* CPU copy CPU pgids */ + spx5_wr(ANA_AC_PGID_MISC_CFG_PGID_CPU_COPY_ENA_SET(1), + sparx5, ANA_AC_PGID_MISC_CFG(PGID_CPU)); + spx5_wr(ANA_AC_PGID_MISC_CFG_PGID_CPU_COPY_ENA_SET(1), + sparx5, ANA_AC_PGID_MISC_CFG(PGID_BCAST)); + + /* Recalc injected frame FCS */ + for (idx = SPX5_PORT_CPU_0; idx <= SPX5_PORT_CPU_1; idx++) + spx5_rmw(ANA_CL_FILTER_CTRL_FORCE_FCS_UPDATE_ENA_SET(1), + ANA_CL_FILTER_CTRL_FORCE_FCS_UPDATE_ENA, + sparx5, ANA_CL_FILTER_CTRL(idx)); + + /* MAC/VLAN support to be added in later patches */ + /* Enable queue limitation watermarks */ + sparx5_qlim_set(sparx5); + + /* netdev and resource calendar support to be added in later patches */ + + sparx5_board_init(sparx5); + + /* Injection/Extraction config to be added in later patches */ + + return 0; +} + +static int mchp_sparx5_probe(struct platform_device *pdev) +{ + struct initial_port_config *configs, *config; + struct device_node *np = pdev->dev.of_node; + struct device_node *ports, *portnp; + struct reset_control *reset; + struct sparx5 *sparx5; + int idx = 0, err = 0; + u8 *mac_addr; + + if (!np && !pdev->dev.platform_data) + return -ENODEV; + + sparx5 = devm_kzalloc(&pdev->dev, sizeof(*sparx5), GFP_KERNEL); + if (!sparx5) + return -ENOMEM; + + platform_set_drvdata(pdev, sparx5); + sparx5->pdev = pdev; + sparx5->dev = &pdev->dev; + + /* Do switch core reset if available */ + reset = devm_reset_control_get_optional_shared(&pdev->dev, "switch"); + if (IS_ERR(reset)) + return dev_err_probe(&pdev->dev, PTR_ERR(reset), + "Failed to get switch reset controller.\n"); + reset_control_reset(reset); + + /* Default values, some from DT */ + sparx5->coreclock = SPX5_CORE_CLOCK_DEFAULT; + + ports = of_get_child_by_name(np, "ethernet-ports"); + if (!ports) { + dev_err(sparx5->dev, "no ethernet-ports child node found\n"); + return -ENODEV; + } + sparx5->port_count = of_get_child_count(ports); + + configs = kcalloc(sparx5->port_count, + sizeof(struct initial_port_config), GFP_KERNEL); + if (!configs) { + err = -ENOMEM; + goto cleanup_pnode; + } + + for_each_available_child_of_node(ports, portnp) { + struct sparx5_port_config *conf; + struct phy *serdes; + u32 portno; + + err = of_property_read_u32(portnp, "reg", &portno); + if (err) { + dev_err(sparx5->dev, "port reg property error\n"); + continue; + } + config = &configs[idx]; + conf = &config->conf; + conf->speed = SPEED_UNKNOWN; + conf->bandwidth = SPEED_UNKNOWN; + err = of_get_phy_mode(portnp, &conf->phy_mode); + if (err) { + dev_err(sparx5->dev, "port %u: missing phy-mode\n", + portno); + continue; + } + err = of_property_read_u32(portnp, "microchip,bandwidth", + &conf->bandwidth); + if (err) { + dev_err(sparx5->dev, "port %u: missing bandwidth\n", + portno); + continue; + } + err = of_property_read_u32(portnp, "microchip,sd-sgpio", &conf->sd_sgpio); + if (err) + conf->sd_sgpio = ~0; + else + sparx5->sd_sgpio_remapping = true; + serdes = devm_of_phy_get(sparx5->dev, portnp, NULL); + if (IS_ERR(serdes)) { + err = dev_err_probe(sparx5->dev, PTR_ERR(serdes), + "port %u: missing serdes\n", + portno); + goto cleanup_config; + } + config->portno = portno; + config->node = portnp; + config->serdes = serdes; + + conf->media = PHY_MEDIA_DAC; + conf->serdes_reset = true; + conf->portmode = conf->phy_mode; + conf->power_down = true; + idx++; + } + + err = sparx5_create_targets(sparx5); + if (err) + goto cleanup_config; + + if (of_get_mac_address(np, mac_addr)) { + dev_info(sparx5->dev, "MAC addr was not set, use random MAC\n"); + eth_random_addr(sparx5->base_mac); + sparx5->base_mac[5] = 0; + } else { + ether_addr_copy(sparx5->base_mac, mac_addr); + } + + /* Inj/Xtr IRQ support to be added in later patches */ + /* Read chip ID to check CPU interface */ + sparx5->chip_id = spx5_rd(sparx5, GCB_CHIP_ID); + + sparx5->target_ct = (enum spx5_target_chiptype) + GCB_CHIP_ID_PART_ID_GET(sparx5->chip_id); + + /* Initialize Switchcore and internal RAMs */ + err = sparx5_init_switchcore(sparx5); + if (err) { + dev_err(sparx5->dev, "Switchcore initialization error\n"); + goto cleanup_config; + } + + /* Initialize the LC-PLL (core clock) and set affected registers */ + err = sparx5_init_coreclock(sparx5); + if (err) { + dev_err(sparx5->dev, "LC-PLL initialization error\n"); + goto cleanup_config; + } + + for (idx = 0; idx < sparx5->port_count; ++idx) { + config = &configs[idx]; + if (!config->node) + continue; + + err = sparx5_create_port(sparx5, config); + if (err) { + dev_err(sparx5->dev, "port create error\n"); + goto cleanup_ports; + } + } + + err = sparx5_start(sparx5); + if (err) { + dev_err(sparx5->dev, "Start failed\n"); + goto cleanup_ports; + } + goto cleanup_config; + +cleanup_ports: + /* Port cleanup to be added in later patches */ +cleanup_config: + kfree(configs); +cleanup_pnode: + of_node_put(ports); + return err; +} + +static const struct of_device_id mchp_sparx5_match[] = { + { .compatible = "microchip,sparx5-switch" }, + { } +}; +MODULE_DEVICE_TABLE(of, mchp_sparx5_match); + +static struct platform_driver mchp_sparx5_driver = { + .probe = mchp_sparx5_probe, + .driver = { + .name = "sparx5-switch", + .of_match_table = mchp_sparx5_match, + }, +}; + +module_platform_driver(mchp_sparx5_driver); + +MODULE_DESCRIPTION("Microchip Sparx5 switch driver"); +MODULE_AUTHOR("Steen Hegelund <steen.hegelund@microchip.com>"); +MODULE_LICENSE("Dual MIT/GPL"); |